package config;

import bean.CustomCommandLineRunner;
import bean.CustomProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.event.ApplicationEventMulticaster;
import org.springframework.context.event.SimpleApplicationEventMulticaster;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.core.env.Environment;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;

@EnableConfigurationProperties(CustomProperties.class)
public class AutoConfig {
    @Bean
    @ConditionalOnProperty(prefix = "xie.auto",name = "enable",havingValue = "true")
    CommandLineRunner createCustomCommandLineRunner(Environment environment){
        return new CustomCommandLineRunner(environment);
    }

    /**
     * 自定义事件发布器
     * @param threadPoolTaskExecutor
     * @return
     */
    @Bean(AbstractApplicationContext.APPLICATION_EVENT_MULTICASTER_BEAN_NAME)
    ApplicationEventMulticaster myApplicationEventMulticaster(ThreadPoolTaskExecutor threadPoolTaskExecutor){
        SimpleApplicationEventMulticaster simpleApplicationEventMulticaster = new SimpleApplicationEventMulticaster();
        simpleApplicationEventMulticaster.setTaskExecutor(threadPoolTaskExecutor);
        return simpleApplicationEventMulticaster;
    }


    /**
     * 自定义事件
     */
    public static class NoticeEvent extends ApplicationEvent {
        private static final Logger logger= LoggerFactory.getLogger(NoticeEvent.class);
        private final String message;

        public NoticeEvent(String message){
            super(message);
            this.message=message;
            logger.info("添加事件成功！message{}",message);
        }

        public String getMessage(){
            return message;
        }
    }

    // 因为这个是自动配置类，用@Bean声明事件监听器的实例，容器会把实例注册为Bean.
    @Bean
    public ApplicationListener<NoticeEvent> creatNoticeListener() {
        return new NoticeListener();
    }

    /**
     * 自定义监听器
     */
    // 与主类不同包，默认情况下，不会被扫描。可以在主类用@ComponentScan额外扫描
//    @Component
    public static class NoticeListener implements ApplicationListener<NoticeEvent> {
        private static final   Logger logger= LoggerFactory.getLogger(NoticeListener.class);

        @Override
        public void onApplicationEvent(NoticeEvent noticeEvent) {
            logger.info("事件监听器获取到事件，睡眠2秒...");
            try {
                Thread.sleep(2000);
            }catch (InterruptedException e){
                e.printStackTrace();
            }
            logger.info("事件的message:"+noticeEvent.getMessage());
        }
    }
}
